JP7187684B2 - Perforated drum device and perforator - Google Patents

Description

The present invention relates to perforating drum devices and perforating devices.

A tobacco rod formed by filling the inside of a wrapping paper with a tobacco filler containing a tobacco raw material (e.g., cut tobacco, tobacco granules, molded tobacco sheet, etc.) and an aerosol-generating base material (e.g., glycerin, propylene glycol, etc.). is known. This type of heat-not-burn tobacco is combined with a heating device (heat-heating tobacco appliance) to form a heat-not-burn tobacco product, and an aerosol generated by heating the tobacco filler without burning it with an electric heater in the heating device. is delivered to the user. As electric heaters, heaters of various shapes, such as blades and rods, have been put into practical use. When smoking or inhaling, an electric heater is inserted from the tip of the tobacco rod to create a heating device. is attached to the

Japanese Patent Publication No. 2010-514435 Japanese Patent Publication No. 2011-507538 JP-A-11-266850 Japanese Patent Publication No. 2010-514438

However, in conventional heated cigarettes, the insertion resistance when inserting the electric heater from the tip surface of the tobacco rod is large, and when the electric heater is inserted into the tobacco rod (tobacco filler), damage such as breaking or bending may occur. Also, there is a risk that the tobacco filler forming the tobacco rod will be pushed toward the mouthpiece, or that the tobacco rod will be buckled and deformed. However, the actual situation is that there has not yet been proposed a manufacturing apparatus capable of perforating a hollow portion for inserting a heater in the tip of a tobacco rod by post-processing. The term "post-processing" as used herein does not mean a continuous tobacco rod obtained by forming a rod in a continuous rod-shaped machine, but rather the end of a tobacco rod that has been individually cut through the cutting of a tobacco rod. refers to drilling a cavity in the

Here, Patent Literatures 1 to 4 disclose techniques related to manufacturing apparatuses and manufacturing methods for continuous tobacco rods having hollow passages extending through the rods. For example, Patent Literature 1 discloses a manufacturing apparatus for manufacturing a continuous body of hollow core tobacco rods, in which a hollow passage is formed when tobacco shreds placed on a wrapping paper are wound into a rod shape by a garniture. It is disclosed that a hollow core is axially formed in the cross-sectional center of the continuous tobacco rod by placing a mandrel in the portion.

Further, Patent Documents 2 to 4 disclose techniques for simultaneously winding a hollow tube and shredded tobacco in a manufacturing apparatus for forming a coaxial hollow core tobacco rod. However, all of the techniques disclosed in Patent Documents 1 to 4 involve forming in advance a hollow core extending along the axial direction of the continuum when manufacturing a continuum of tobacco rods, or forming a hollow tube in advance. It is a technique for inserting in advance. Therefore, in a tobacco rod obtained by cutting a tobacco rod continuum into a predetermined length, a hollow portion can only be formed in such a manner that it penetrates the tobacco rod in the axial direction. A non-penetrating cavity cannot be formed on the tip side. Therefore, in order to form a non-penetrating cavity at the tip of a tobacco rod, it is necessary to punch the cavity in the tip of the tobacco rod by post-processing, but such a device does not yet exist. In addition, the idea of perforating cavities in the tip end of a tobacco rod by post-processing (for tobacco rods that have been individually cut, not for continuous tobacco) is itself novel in the first place.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to provide a technique capable of punching a cavity in the tip of a tobacco rod in a heat-not-burn tobacco by post-processing. be.

The present invention for solving the above-mentioned problems is a perforated drum device for perforating a hollow portion in a tobacco rod of a heated tobacco, wherein the heated tobacco is held so that the axial direction of the tobacco rod is along the rotation axis of the drum. and a perforating unit provided on the rotating drum portion for perforating the tip end of the tobacco rod of the heat-not-burning tobacco held by the holding portion during the process of conveying the heat-not-burning tobacco. and a cam portion provided on a rotating drum base portion provided side by side with the rotating drum portion. a perforation slider having an extending slide rod and a perforation needle portion arranged on the outer peripheral side of the rotating drum portion, the perforation slider being held by the slide rod so as to be reciprocally slidable along the axial direction of the slide rod; It is provided on a slider, engages with the cam portion, and is guided by the cam portion when it rotates with the rotation of the rotating drum portion, thereby moving the perforation slider along the axial direction of the slide rod. a cam follower that reciprocates and slides, wherein the cam portion has at least an insertion section that guides the cam follower so that the perforated needle portion is inserted into the tobacco rod from the tip; a withdrawal section for guiding the cam follower as it is withdrawn from the rod.

Further, the cam portion may have a guide rail that extends in an arc around the drum rotating shaft and that can receive the cam follower.

Further, the cam portion may have a guide rail that extends in an arc around the drum rotating shaft and that can receive the cam follower.

Further, the guide rails may be arranged in an annular shape around the drum rotating shaft.

Further, the guide rail has a three-dimensional curved shape with an equidistant distance from the drum rotation axis, and at least a part thereof is an inclined guide portion inclined with respect to a virtual orthogonal plane perpendicular to the drum rotation axis. , and the insertion section and the withdrawal section may be formed by the inclined guide portion.

In addition, the inclined guide portion includes at least one of a constant-speed slide area having a constant inclination angle with respect to the virtual orthogonal plane and a variable speed slide area having an uneven (that is, changing) inclination angle with respect to the virtual orthogonal plane. You can stay.

Further, an inclination angle of the withdrawal section with respect to the virtual orthogonal plane may be smaller than an inclination angle of the insertion section with respect to the virtual orthogonal plane.

Further, the rotating drum base may have a cylindrical housing coaxial with the drum rotating shaft, and the guide rail may be provided along the outer peripheral surface of the cylindrical housing.

Further, the cam portion may be longer in the withdrawal section than in the insertion section.

In addition, the cam portion is arranged in an annular shape centering on the drum rotation axis. direction of a third imaginary perpendicular line extending from the start position of the withdrawal section toward the drum rotation axis relative to a first central angle φ1 formed by a direction vector of a second imaginary perpendicular line extending from the starting position toward the drum rotation axis. A second central angle φ2 between a vector and a directional vector of a fourth imaginary perpendicular line extending from the end position of the withdrawal section toward the drum rotation axis may be large.

In addition, the cam portion is arranged in an annular shape centering on the drum rotation axis. A first central angle φ1 formed by a direction vector of a second imaginary perpendicular extending from the position toward the drum rotation axis may be 10° or more and 120° or less.

In addition, the cam portion is arranged in an annular shape centering on the drum rotation axis. A second central angle φ2 formed by a direction vector of a fourth imaginary perpendicular line extending from the position toward the drum rotation axis may be 10° or more and 180° or less.

Further, the cam portion maintains the perforation needle portion inserted into the tobacco rod by maintaining the perforation slider in a normal position with respect to the slide rod between the insertion section and the withdrawal section. An insertion state orientation section may be included to guide the cam follower so that the cam follower is positioned at the bottom of the cam follower.

Moreover, the diameter of the perforating needle portion may be 3.5 mm or less.

The perforation slider has a slider main body slidably mounted on the slide rod, and a needle shaft portion rotatably held by the slider main body and having the perforation needle portion attached to the distal end side thereof. The needle shaft portion and the piercing needle portion are coaxially arranged and rotatable about a rotation axis parallel to the drum rotation axis, and the rotary drum base portion rotates as the rotary drum portion rotates. While the cam follower of the perforation slider that operates is displaced in at least a part of the insertion section, the needle shaft is displaced by sliding a predetermined contacted portion formed on the needle shaft. A guide member extending in an arc around the drum rotating shaft may be provided for rotating the drum.

Further, the guide member is in contact with the contacted portion while the cam follower of the perforation slider that revolves along with the rotation of the rotary drum portion displaces at least a part of the pull-out section. It may be formed as follows.

The contacted portion is an annular roller portion provided coaxially and integrally with the needle shaft portion, and the needle shaft portion is displaced by friction when the roller portion slides on the guide member. You can rotate.

Further, the guide member may have a plurality of divided guide portions obtained by dividing the guide member into a plurality of divided guide portions, and the plurality of divided guide portions may be separated from each other.

The holding portion is a holding groove having a concave shape capable of holding the tobacco rod, and the needle axis of the perforating needle portion is an imaginary vertical line extending from the center of the groove bottom of the holding groove toward the drum rotation axis. and the drum rotation axis, and a point on a straight line passing through the center of the groove bottom and located outside the center of the groove bottom, and extending parallel to the drum rotation axis. Also good.

Further, the distance between the center of the groove bottom in the holding groove and the needle shaft in the perforated needle portion may be set to be equal to or smaller than the diameter of the tobacco rod of the heated tobacco held in the holding groove.

Further, the rotary drum portion contacts the mouthpiece end of the heated tobacco when the perforated needle portion is inserted into the tip end of the tobacco rod, thereby suppressing the falling off of the tobacco rod from the holding portion. stopper member.

Further, the rotating drum portion has a second stopper member that prevents the heated tobacco from coming off from the holding portion by coming into contact with the tip of the tobacco rod when the perforated needle portion is pulled out from the tobacco rod. It's okay to be

Further, the present invention can be specified as a punching device including a plurality of any of the punching drum devices described above. In this case, among the plurality of perforating drum devices, the needle diameter of the perforating needle portion provided in the perforating drum device positioned relatively in the rear stage is equal to the diameter of the perforating needle portion provided in the perforating drum device positioned relatively in the front stage. It may be larger than the needle diameter of the needle portion.

Further, among the plurality of perforating drum devices, the needle insertion depth dimension of the perforating needle portion provided in the perforating drum device positioned relatively in the rear stage is the same as the needle insertion depth dimension provided in the perforating drum device positioned relatively in the front stage. It may be larger than the needle insertion depth dimension of the perforating needle portion.

It should be noted that the means for solving the problems in the present invention can be employed in combination as much as possible.

ADVANTAGE OF THE INVENTION According to this invention, the technique which can perforate a hollow part by post-processing can be provided with respect to the front-end|tip of the tobacco rod in a heat-not-burn cigarette.

FIG. 1 is a diagram schematically showing the internal structure of a heated tobacco product according to Embodiment 1. FIG. FIG. 2 is a diagram schematically showing part of a drum row provided in the filter tip attachment device according to Embodiment 1. FIG. 3 is a diagram schematically showing part of the perforating drum according to Embodiment 1. FIG. 4 is a longitudinal sectional view of the perforating drum device according to Embodiment 1. FIG. FIG. 5 is a view in the direction of arrow A shown in FIG. 4 according to the first embodiment. 6 is a front view of a control ring according to Embodiment 1. FIG. FIG. 7 is a diagram for explaining the detailed configuration of the punching unit according to the first embodiment. 8 is a top view of the punching unit according to Embodiment 1. FIG. 9 is a front view of the punching unit according to Embodiment 1. FIG. FIG. 10 is a diagram showing the relationship between the rotation angle of the rotating drum portion, the guide rail in the cam portion, and the movement trajectory of the tip position of the needle according to the first embodiment. FIG. 11 is a diagram for explaining the relationship between each section of the guide rail provided on the cam portion and a virtual orthogonal plane orthogonal to the drum rotation axis. FIG. 12 shows the first direction vector of the first imaginary perpendicular line extending from the beginning of the insertion section of the guide rail toward the drum rotation axis, and the second direction vector of the second imaginary perpendicular line extending from the end of the insertion section toward the drum rotation axis. a first central angle formed by , a third direction vector of a third imaginary perpendicular line extending from the beginning of the drawing section toward the drum rotation axis, and a fourth direction vector of a fourth imaginary perpendicular line extending from the end of the drawing section toward the drum rotation axis FIG. 2 is a diagram for explaining a second central angle formed by FIG. 13 is a diagram for explaining the relationship between the needle shaft of the perforating needle portion and the holding groove in the perforating drum device. 14A and 14B are diagrams for explaining a modification of the first embodiment. FIG. 15 is a partially enlarged view of a second stop ring in a modified example of Embodiment 1. FIG. FIG. 16 illustrates a perforating device including a plurality of perforating drum devices incorporated into a filter tip attachment device.

Here, embodiments of a perforating drum device and a perforating device according to the present invention will be described based on the drawings. A perforated drum device according to the present invention is a device for perforating a heater-inserting cavity in the tip surface of a tobacco rod in a heated tobacco. It should be noted that the dimensions, materials, shapes, relative arrangements, etc. of the constituent elements described in this embodiment are not intended to limit the technical scope of the invention unless otherwise specified. do not have.

<Embodiment 1>
[heat-not-burn tobacco]
FIG. 1 is a diagram schematically showing the internal structure of a heated tobacco 1 having a heater insertion cavity perforated in the tip surface of a tobacco rod by a perforated drum device according to Embodiment 1. As shown in FIG. Heat-not-burn tobacco 1 is a tobacco product that is combined with a heating device to form a heat-not-burn tobacco product. A heated tobacco product consisting of a heated tobacco 1 and a heating device heats the tobacco filler of the heated tobacco without burning it by an electric heater of the heating device, and supplies the aerosol generated in the tobacco filler to the user. .

A heated cigarette 1 comprises a tobacco rod 2 and a filter 3 coaxially aligned. The heated cigarette 1 has a mouth end 1a that a user inserts into the oral cavity during use, and a tip 1b at the end opposite to the mouth end 1a. The filter 3 has a support portion 4, an aerosol cooling portion 5, and a mouthpiece portion 6 which are coaxially arranged, and these members are arranged in order from the tip side of the filter 3. As shown in FIG. The support portion 4 of the filter 3 , the aerosol cooling portion 5 and the mouthpiece portion 6 are integrally wound up by a roll paper 7 . Furthermore, the tobacco rod 2 and the filter 3 are integrally connected by being wound up with the tipping paper 8 .

When smoking or inhaling the heated tobacco 1, air is sucked through the heated tobacco 1 from the tip 1b to the mouth end 1a by the user. The tip 1b of the heated tobacco 1 can be regarded as the tip of the tobacco rod 2 or the upstream end, and the mouthpiece end 1a of the heated tobacco 1 can be regarded as the rear end or the downstream end of the mouthpiece portion 6.

The tobacco rod 2 is arranged at the tip 1b of the heated tobacco 1. As shown in FIG. The tobacco rod 2 is a rod-shaped member wrapped with wrapping paper 22 so as to cover the sides of a tobacco filler 21 containing tobacco raw materials and an aerosol-generating base material. In this embodiment, the tobacco material contained in the tobacco filler 21 may include any one or more of cut tobacco, tobacco granules, and reconstituted tobacco material.

Reconstituted tobacco materials are those obtained by cutting reconstituted tobacco sheets into small pieces or pulverizing them into granular or powdery forms, or by folding the reconstituted tobacco sheets without cutting them. It can be. Reconstituted tobacco sheets are produced by, for example, kneading tobacco raw materials such as homogenized tobacco with additives such as binders, gelling agents, cross-linking agents, flavoring agents, viscosity modifiers, etc., followed by slurry method (casting method), papermaking method, etc. , a rolling method, an extrusion method, or the like, and formed into a sheet. Reconstituted tobacco material is formed from tobacco material such as, for example, tobacco stems, tobacco petioles, leaf discs, and tobacco dust produced in the tobacco product manufacturing process. Reconstituted tobacco material is obtained by cutting reconstituted tobacco sheets formed by a known method such as a slurry method, a papermaking method, a rolling method, etc. into small pieces or pulverizing them into granular or powdery forms. etc. are known. Homogenized tobacco is, for example, a tobacco material obtained by pulverizing, grinding, and mixing leaf tobacco, dry tobacco leaves, cut tobacco, puffed tobacco, regenerated tobacco, and the like.

The leaf tobacco may be, for example, leaves, petioles, stems, flowers, etc. of Nicotiana tabacum species and Nicotiana rustica species as cultivated species, or plants of the Nicoatiana genus as wild species. Dry tobacco leaves are, for example, dried leaf tobacco. Puffed tobacco is obtained by, for example, puffing tobacco stems, petioles, leaf veins, part of mesophyll, etc. by compressing and depressurizing. Reconstituted tobacco is obtained, for example, by dissolving and sieving fragments and dust of dried leaf tobacco, shredded tobacco or puffed tobacco broken in the tobacco manufacturing process.

Binders and gelling agents contained in the reconstituted tobacco slurry include, for example, natural polymers, gelatin, chondroitin sulphate, polysaccharides and polysaccharide salts (e.g., alginate, carrageenan, gellan gum, guar gum, agarose, sorbitol, invert sugar, starch, dextrin, starch hydrolyzate, oxidized starch, etc.) and the like. The binder may contain, for example, inorganic salts, calcium salts, calcium carbonate, potassium salts, potassium carbonate, magnesium salts, magnesium carbonate, sodium salts, sodium carbonate, triethyl citrate, and the like. Flavors may include, for example, plant essential oils, leaf tobacco extracts, ground tobacco leaves, menthol, synthetic flavors, natural flavors, essential oils, and the like. Moreover, the perfume may have lipophilicity or may have hydrophilicity. Lipophilic fragrances include, for example, vanillin, ethyl vanillin, gualinalol, thymolmethylsalicylate, linalool, eugenol, menthol, clove, anise, cinnamon, bergamot oil, geranium, lemon oil, spearmint, ginger and the like. Hydrophilic fragrances include, for example, glycerin, propylene glycol, ethyl acetate, isoamyl alcohol and the like. The viscosity modifier may contain, for example, water, oil, fatty acid, hydrophilic solvent, alcohol, ethanol, glycerin, propylene glycol, and the like. Further, the reconstituted tobacco slurry may contain humectants such as water, glycerin and propylene glycol, and reinforcing materials such as tobacco fibers, tobacco cellulose fibers, wood pulp, cellulose fibers and non-tobacco cellulose fibers. .

In addition, the reconstituted tobacco sheet includes a reconstituted tobacco slurry sheet (reconstituted tobacco cast sheet), a reconstituted tobacco sheet, and a reconstituted rolled tobacco sheet formed using an appropriate method such as a slurry method, a papermaking method, a rolling method, and the like. It may be a sheet. For example, a reconstituted tobacco slurry sheet is a reconstituted tobacco sheet produced by drying and dehydrating a reconstituted tobacco slurry spread on a flat plate. A reconstituted tobacco sheet is a reconstituted tobacco sheet produced by blending pulp (cellulose fibers) with a reconstituted tobacco slurry and making paper. A reconstituted tobacco rolled sheet is a reconstituted tobacco sheet produced by rolling a reconstituted tobacco slurry into a sheet with rollers or the like and drying the sheet.

The aerosol-generating base material contained in the tobacco filler 21 is a substance that generates an aerosol when the volatile substance that is volatilized and released is cooled. The type of aerosol-generating substrate is not particularly limited, and substances extracted from various natural products can be appropriately selected depending on the application. Examples of aerosol-forming substrates include glycerin, propylene glycol, triacetin, 1,3-butanediol, mixtures thereof, and the like.

The support portion 4 is located immediately downstream of the tobacco rod 2 and arranged in contact with the rear end of the tobacco rod 2 . The support 4 may be, for example, a hollow cellulose acetate tube. In other words, the support portion 4 may be formed by penetrating a center hole in the center of the cross section of a cylindrical cellulose acetate fiber bundle. Moreover, the support part 4 may be, as another form, a paper filter filled with cellulose fibers, a paper tube, or the like. The support portion 4 is arranged so that the tobacco filler 21 moves downstream toward the aerosol cooling portion 5 within the heating tobacco 1 when the electric heater of the heating device to which the heating tobacco 1 is applied is inserted into the tobacco rod 2 . It is an element to prevent being pushed into. The support part 4 also functions as a spacer for separating the aerosol cooling part 5 of the heated cigarette 1 from the tobacco rod 2 .

The aerosol cooling part 5 is positioned immediately downstream of the support part 4 and arranged in contact with the rear end of the support part 4 . During smoking or inhalation of the heated cigarette 1 , the volatile substances released from the tobacco rod 2 (tobacco filler 21 ) flow downstream along the aerosol cooling section 5 . The volatile substances emitted from the tobacco rod 2 (tobacco filler 21) are cooled by the aerosol cooling section 5 to form an aerosol that is inhaled by the user. In the form shown in FIG. 1, the aerosol cooling part 5 is formed by a hollow paper tube having a ventilation hole 5a through which external air can be introduced. However, the aerosol cooling part 5 does not have to have the ventilation hole 5a.

The mouthpiece section 6 is a segment located immediately downstream of the aerosol cooling section 5 . The mouthpiece part 6 may be placed in contact with the rear end of the aerosol cooling part 5 . In the form shown in FIG. 1, the mouthpiece portion 6 may comprise a filter material made of, for example, cylindrically shaped cellulose acetate fibers. Further, the mouthpiece portion 6 may be a center hole filter, a paper filter filled with cellulose fibers, or a paper tube containing no filtering material.

As shown in FIG. 1, a hollow heater insertion cavity 23 is opened in the tip end face 2a of the tobacco rod 2 (tobacco filler 21). The heater insertion cavity 23 is a recess along the axial direction of the tobacco rod 2 (tobacco filler 21). The heater insertion cavity 23 has a conical shape whose diameter decreases from the tip surface 2a (tip 1b) of the tobacco rod 2 (tobacco filler 21) toward the rear end. It may have a frusto-conical shape tapering sideways. The shape of the heater insertion cavity 23 is not particularly limited, and may have a shape other than a conical shape or a truncated conical shape. A symbol CL1 shown in FIG. 1 is the central axis of the tobacco rod 2 . The heater insertion cavity 23 may be formed coaxially with the central axis CL<b>1 of the tobacco rod 2 .

In the heated tobacco 1 configured as described above, the heater insertion cavity 23 is formed in the tobacco rod 2 (tobacco filler 21). The insertion resistance of the heater insertion cavity 23 against (tobacco filler 21) can be reduced. As a result, usability can be improved when the tobacco rod 2 is attached to the heating device (when the electric heater is inserted into the tobacco rod 2). In addition, when the electric heater is inserted into the tobacco rod 2, it is possible to prevent the electric heater from being broken or the tobacco rod 2 from being buckled. In addition, since the tobacco rod 2 (tobacco filler 21) is provided with the heater insertion cavity 23, the insertion resistance of the electric heater can be reduced. The tobacco filler 21 and the electric heater can be brought into close contact with each other while suppressing the pushing into the support portion 4 side more preferably, thereby improving heat conduction from the electric heater to the tobacco filler 21 . Furthermore, even when the tobacco rod 2 of the heated cigarette 1 is pulled out from the heating device after smoking or inhaling, the frictional force generated between the electric heater and the tobacco filler 21 is small, so the tobacco filler 21 is unlikely to come off. In addition, since the tobacco filler 21 is less likely to be burned during smoking or inhalation, the tobacco filler 21 is less likely to come off when the tobacco rod 2 is pulled out from the heating device after smoking or inhalation.

[Perforated drum device]
Next, the perforating drum device 70 for perforating the heater insertion cavity 23 in the tobacco rod 2 of the heated tobacco 1 will be described.

FIG. 2 is a diagram schematically showing part of the drum row provided in the filter tip attachment device 50 according to Embodiment 1. As shown in FIG. 3 to 10 are diagrams for explaining the perforating drum device 70 according to the first embodiment. A perforated drum device 70 is incorporated into the filter tip attachment device 50 . The filter tip attachment device 50 attaches tobacco rods manufactured by a cigarette winding machine (not shown) (a continuous rod-shaped mechanical device) and individually cut, and filter rods manufactured by a filter manufacturing device (not shown). It is a device that receives and integrally attaches them by winding them with tipping material (tipping paper).

As shown in FIG. 2, the filter tip attachment device 50 attaches two single tobacco rods 2 in the process of conveying the double tobacco rod DR received from a cigarette winding machine (not shown) by a drum or the like (not shown). cut to The double tobacco rod DR is a rod-shaped member in which a tobacco filler 21 is wrapped with a wrapping paper 22 having a length twice that of the tobacco rod 2 . Hereinafter, the single tobacco rod 2 will be simply referred to as "tobacco rod 2". The two tobacco rods 2 obtained by cutting the double tobacco rod DR are arranged in a spaced apart state in the axial direction.

The filter tip attachment device 50 has a carrier drum 51 that carries the double filter rods DF. The double filter rod DF is a filter rod having twice the length of the filter 3, and is formed so that two filters 3 can be obtained by halving it at the center. The double filter rod DF is conveyed to the hopper drum 52 by the conveying drum 51 .

In the arrangement of the tobacco rods 2 described above, a space is formed between the two tobacco rods 2 so that the filter 3 can be received, and the tobacco rods 2 are supplied to the hopper drum 52 while maintaining this space. At this time, the arrangement of tobacco rods 2 receives a double filter rod DF between each tobacco rod 2 and is aligned on the same axis as the double filter rods DF. The hopper drum 52 has a pair of floating discs (not shown) on both sides of the hopper drum 52 when viewed in the direction of rotation. can be packed.

The filter tip attachment device 50 continuously feeds out a web of tipping paper 8 wound around a bobbin (hereinafter referred to as "tipping paper web") TW, and applies glue to one side of the web. The chipping paper web TW is cut into chipping papers 8 of predetermined length from the top. The cut chipping paper 8 is fed to the hopper drum 52 and adheres to the outer surfaces of the tobacco rod 2 and the double filter rod DF on the hopper drum 52 . Then, the two tobacco rods 2, the double filter rods DF sandwiched between them, and the chipping paper 8 stuck to the outer surfaces thereof are fed to the rolling drum 53 adjacent to the hopper drum 52. As shown in FIG.

As the rolling drum 53 rotates, the tobacco rod 2 and the like are rolled on its outer peripheral surface, and the tipping paper 8 follows this rolling, thereby forming a double filter rod DF and two filter rods arranged at both ends thereof. A tipping paper 8 is wound around the outer surface of the tobacco rod 2. - 特許庁When the winding of the tipping paper 8 is completed, the base end portions of the double filter rod DF and the tobacco rods 2 on both sides thereof are glued so as to integrally wrap the tipping paper 8, and the tobacco rods 2 are attached to both sides of the double filter rod DF. A connected double-wound DS is obtained.

The double-wound DS is transferred from the rolling drum 53 to the checking drum 54 as the next step. In the checking drum 54, the double-wrapped DS is inspected for ventilation, and defective products such as a hole-wound product with a tear in the wrapping paper and a defective product such as excessive dilution are eliminated. The double wound DS that has passed the ventilation inspection is then transferred from the checking drum 54 to the cutting drum 55 . On the cutting drum 55 , the double wrap DS is halved at the center position of the double filter rod DF by a cutting knife (not shown), thereby separating the two heated cigarettes 1 . At this point, the heated tobacco 1 has the tobacco rod 2 and the filter 3 integrally wound with the tipping paper 8, and the heater insertion cavity 23 has not yet been pierced at the tip.

The heated tobacco 1 cut into two pieces from the double wrap DS is sequentially transferred from the cutting drum 55 to the turning drum 56 and the perforating drum 60 . The turning drum 56 has a large number of holding grooves on its outer peripheral surface, and each pair of heated cigarettes 1 can be received in these holding grooves.

By separating the double wrap DS, the pair of heated cigarettes 1 are transferred from the cutting drum 55 to the turning drum 56 while facing each other. The turning drum 56 reverses the direction of one of the pair of heated cigarettes 1 received in a state facing each other, and displaces it so that it is positioned on the same line as the other heated cigarette 1 on the outer peripheral surface. After that, the heated cigarettes 1 are sequentially conveyed toward the perforated drum 60 . The perforating drum 60 perforates the tip surface 2a of the tobacco rod 2 during the transport process until the heated tobacco 1 received from the preceding drum is transferred to the subsequent drum 59, and the heater inserting drum 60 described in FIG. A cavity 23 is formed. The perforated drum 60 forms part of a perforated drum device 70 .

FIG. 3 is a diagram schematically showing part of the perforating drum 60 according to the first embodiment. Although details will be described later, the perforated drum 60 has a large number of holding grooves on its outer peripheral surface, and each holding groove receives the heated tobacco 1 having the tobacco rod 2 . Suction air is supplied to the holding grooves of the perforated drum 60, and the heated tobacco 1 received in the holding grooves is sucked and held in the holding grooves. Further, the perforating drum 60 is provided with a perforating needle member 240 extending in the extension direction of each holding groove. The perforating drum 60 perforates the heated tobacco 1 by inserting the perforating needle member 240 from the tip surface 2 a of the tobacco rod 2 during the transport process. As a result, the heated tobacco 1 having the tobacco rod 2 with the heater insertion cavity 23 is obtained.

FIG. 4 is a longitudinal sectional view of the perforating drum device 70 according to the first embodiment. FIG. 4 shows the vertical and forward/backward directions of the perforating drum device 70 for the sake of convenience. The perforating drum device 70 has a perforating drum 60, a fixed housing 80, a frame member 90 supporting them, and the like. The frame member 90 has a bottom plate frame portion 91, a rear frame portion 92, a front frame portion 93, and the like. The rear frame portion 92 and the front frame portion 93 are frame members erected upward from the bottom plate frame portion 91 .

The fixed housing 80 is an immovable fixed member that is fixed to the rear frame portion 92 of the frame member 90 and is provided side by side with the perforating drum 60 . The stationary housing 80 corresponds to the rotating drum base. 5 is a view in the direction of arrow A shown in FIG. 4. FIG. The fixed housing 80 is a substantially cylindrical housing member, and the inside is hollow. A reference numeral 81 denotes a hollow portion of the fixed housing 80 . Symbol CL2 is the rotating shaft of the perforating drum 60 . In this embodiment, the fixed housing 80 is arranged so as to be coaxial with the rotation axis CL2 of the perforating drum 60 (hereinafter also referred to as "drum rotation axis"), and the central axis of the fixed housing 80 is the drum rotation axis CL2. is consistent with Bearing housings 110A and 110B are attached to both ends of the fixed housing 80 in the axial direction, and a rotary drive shaft 100 for rotating the perforating drum 60 is rotatably supported by the bearing housings 110A and 110B. ing. The central axis of the rotary drive shaft 100 coincides with the drum rotation axis CL2. The bearing housings 110A and 110B rotatably support the rotary drive shaft 100 with bearings or the like. A timing pulley 120 is attached to the rear end side of the rotary drive shaft 100 . A timing belt (not shown) is wound around the timing pulley 120 . The timing belt is also wound around a motor-side pulley (not shown) attached to the rotating shaft of the drive motor (not shown), and the rotational output of the drive motor is transmitted to the timing pulley 120 via the timing belt. As a result, the rotary drive shaft 100 is driven to rotate.

The perforating drum 60 is a substantially bottomed cylindrical drum, and has a bottom plate portion 61 and a cylindrical rotary drum portion 62 which is a side peripheral wall erected from the bottom plate portion 61 . A plurality of holding grooves (holding portions) 63 are formed at regular intervals in the circumferential direction on the outer peripheral surface 62A of the rotating drum portion 62 (see FIG. 5). The holding groove 63 is a recess that can receive the heated tobacco 1 (tobacco rod 2), and has, for example, a semicircular shape. Although the number of holding grooves 63 is not particularly limited, in the example shown in FIG. 5, 20 holding grooves 63 are provided on the outer peripheral surface 62A of the rotating drum portion 62 at regular intervals. Further, the holding groove 63 of the rotary drum portion 62 extends parallel to the drum rotation axis CL2. Therefore, the holding groove 63 of the rotary drum portion 62 can hold the heated tobacco 1 (tobacco rod 2) so that the direction of the central axis CL1 of the tobacco rod 2 is along the drum rotation axis CL2.

As shown in FIG. 5, the groove bottom of each holding groove 63 is provided with a suction hole 63A for supplying suction air for sucking the heated cigarette 1 received in each holding groove 63. . Inside the rotating drum portion 62 of the perforating drum 60, a first suction passage 64 having one end connected to the suction hole 63A extends in the radial direction of the rotating drum portion 62 (see FIGS. 4, 5, etc.). ).

As shown in FIG. 4, each holding groove 63 in the rotary drum portion 62 is provided with three suction holes 63A, and the first suction passages 64 are connected to the respective suction holes 63A. However, the number of suction holes 63A formed in each holding groove 63 is not particularly limited. A second suction passage 65 connected to the other end of each of the first suction passages 64 extends along the direction of the drum rotation axis CL2 in the rotating drum portion 62 . The second suction passage 65 opens at the front end surface 62B of the rotating drum portion 62 . Reference numeral 65A denotes an opening hole through which the second suction passage 65 opens in the front end surface 62B of the rotating drum portion 62. As shown in FIG. As shown in FIG. 5, the front end face 62B of the rotating drum portion 62 has opening holes 65A arranged in a ring at regular intervals in the circumferential direction.

A disc plate 130 is integrally attached to the front end side of the rotary drive shaft 100 . A disc plate 130 of the rotary drive shaft 100 is integrally fastened with an end plate 140 via a connecting pin. Also, the end plate 140 is integrally fastened to the bottom plate portion 61 of the perforating drum 60 via a connecting pin. As described above, the rotary drive shaft 100 in this embodiment is integrally fixed to the bottom plate portion 61 of the perforating drum 60 via the disk plate 130 and the end plate 140 . As a result, the rotary drive shaft 100 rotates, and the perforating drum 60 is driven to rotate in synchronization with the rotary drive shaft 100 . As shown in FIG. 4, since a bearing 160 is interposed between the inner peripheral surface of the perforating drum 60 on the rear end side of the rotary drum portion 62 and the outer peripheral surface of the fixed housing 80, the rotational driving is achieved. The punching drum 60 can be smoothly rotated in synchronization with the shaft 100 . In addition, in the present embodiment, for the sake of convenience, an example in which the perforating drum device 70 is viewed from the front side and the perforating drum 60 is rotationally driven counterclockwise will be described.

Next, the control ring 150 provided on the front side of the perforating drum 60 and the fixed housing 80 in the perforating drum device 70 will be described. A front plate 94 is attached to the front frame portion 93 of the frame member 90 , and a ring holder 95 is fixed to the front plate 94 . A control ring 150 is fixed to the ring holder 95 . The control ring 150 is an annular member arranged so that its center coincides with the drum rotation axis CL2. Fixed. In this embodiment, the perforating drum 60 is rotationally driven while the front end surface 62B of the rotary drum portion 62 is brought into sliding contact with the rear surface 150A of the control ring 150. As shown in FIG. Here, a suction supply channel 151 for supplying suction air to each of the second suction passages 65 in the rotary drum portion 62 is recessed in a groove shape on the rear surface 150A of the control ring 150 .

FIG. 6 is a front view of the control ring 150 according to Embodiment 1. FIG. Reference numeral 150B shown in FIG. 6 denotes the front surface of the control ring 150. As shown in FIG. In control ring 150, suction supply channel 151 opens into rear surface 150A. Further, the suction supply channel 151 extends in an arc shape along the circumferential direction of the control ring 150, and in this embodiment, is formed over substantially half the circumference of the control ring 150. As shown in FIG. However, the range in which the suction supply channel 151 is formed in the control ring 150 can be changed as appropriate. Reference numeral 152 shown in FIG. 6 denotes a suction port for supplying suction pressure to each of the second suction passages 65 in the rotating drum portion 62 . The suction port 152 is open on the front surface 150B of the control ring 150 and communicates with the suction supply channel 151 .

Further, reference numeral 153 denotes an air release hole for supplying atmospheric pressure to each second suction passage 65 in the rotating drum portion 62 . The atmosphere opening hole 153 penetrates the control ring 150 in the thickness direction from the front surface 150B to the rear surface 150A of the control ring 150 and is open to the atmosphere. Reference numeral 154 denotes blow air supply holes for supplying blow air to the second suction passages 65 in the rotating drum portion 62 . The blow air supply hole 154 extends through the control ring 150 in the thickness direction from the front surface 150B to the rear surface 150A. Here, reference numeral 155 shown in FIG. 5 denotes an elbow pipe connected to the suction port 152 of the control ring 150. As shown in FIG. A reference numeral 156 denotes an elbow pipe connected to the blow air supply hole 154 of the control ring 150 . A suction pressure is supplied to the elbow pipe 155 from a suction source (not shown) through a tube or the like. Air for air blow is supplied to the elbow pipe 156 from an air supply source (not shown) through a tube or the like.

6, reference numeral 151A denotes the beginning of the suction supply channel 151, and reference numeral 151B denotes the end of the suction supply channel 151. As shown in FIG. While the perforating drum 60 is driven to rotate, suction pressure is introduced into the suction supply channel 151 of the control ring 150 via each elbow pipe 155 and the suction port 152 shown in FIG. In this embodiment, the radial distance between the suction supply channel 151 and the drum rotation axis CL2 in the control ring 150 and the diameter between each second suction passage 65 in the rotation drum portion 62 and the drum rotation axis CL2 The separation distances in the directions are set to equal dimensions. Therefore, when the perforating drum 60 is driven to rotate, suction is started from the suction start position shown in FIG. Suction pressure is supplied to the suction hole 63A of the holding groove 63 through the second suction passage 65 and the first suction passage 64 communicating with the suction supply channel 151 over the suction section up to the end position. As a result, suction pressure is applied from the suction hole 63A to the holding groove 63 located in the suction section of the control ring 150. As shown in FIG.

For example, the perforating drum 60 in this embodiment receives the heated tobacco 1 from the preceding turning drum 56 when the holding grooves 63 of the perforating drum 60 reach a rotation angle of 0°, thereby sucking the heated tobacco 1. It may be designed such that when each holding groove 63 reaches a rotation angle of 180°, the heated tobacco 1 held in the holding groove 63 is transferred to the rear drum 59 (see FIG. 6). reference). In the example shown in FIG. 6, the supply of the suction pressure to the suction holes 63A ends when the holding grooves 63 of the perforating drum 60 reach the rotation angle of 170°. After the suction holes 63A of the holding grooves 63 are opened to the atmosphere, the heated cigarettes 1 held in the holding grooves 63 are transferred to the rear drum 59. As shown in FIG. After the perforated drum 60 transfers the heated cigarettes 1 sucked and held in the holding grooves 63 to the rear drum 59, the suction holes 63A of the holding grooves 63 become the first suction passages 64 and the second suction passages 65. Blow air is supplied to the suction hole 63A at the timing of communicating with the blow air supply hole 154 through the suction hole 63A. The jet pressure of this blow air is used for cleaning the first suction passage 64 and the second suction passage 65 corresponding to each holding groove 63 of the perforating drum 60 . The above-described timings for suction, opening to the atmosphere, and blowing air are exemplary, and can be changed as appropriate.

As shown in FIGS. 4 and 5, the perforated drum device 70 in this embodiment includes a guide plate 180 that guides the heated tobacco 1 sucked and held in each of the holding grooves 63 of the perforated drum 60. As shown in FIG. . Guide plate 180 is supported by studs 185 fixed to rear frame portion 92 . Reference numeral 186 shown in FIGS. 4 and 5 denotes an annular stop ring attached to the outer peripheral surface 62A of the rotary drum portion 62 and arranged in front of the holding groove 63. As shown in FIG. The stop ring 186 forms a contact surface 186A for positioning the heated tobacco 1 by coming into contact with the mouthpiece end 1a (the end surface on the filter 3 side) of the heated tobacco 1 sucked and held in each holding groove 63. (see FIG. 7).

Next, the punching unit 200 for punching the tobacco rod 2 of the heated cigarette 1 held in each holding groove 63 will be described. As shown in FIG. 3 , the perforating unit 200 is provided on the rotating drum section 62 , and in the process of transporting the heated tobacco 1 (tobacco rod 2 ) by the rotating drum section 62 , the heating unit 200 is held in the holding groove 63 . This is a unit for perforating the tip surface of the tobacco rod 2 in the cigarette 1. The punching unit 200 includes a pair of slide rods 210, 210 provided on the rotary drum section 62, and a punching slider 220 slidably held by the pair of slide rods 210, 210 (see FIG. 3). FIG. 7 is a diagram for explaining the detailed configuration of the punching unit 200. As shown in FIG. FIG. 8 is a top view of the punching unit 200. FIG. FIG. 9 is a front view of the punching unit 200. FIG.

Each slide rod 210 protrudes forward from the rear end surface 62C of the rotary drum portion 62 so as to extend parallel to the drum rotation axis CL2. In this embodiment, the pair of slide rods 210, 210 are arranged so that the two holding grooves 63 are included in the region sandwiched between the pair of slide rods 210, 210 in the circumferential direction of the rotating drum portion 62. Each slide rod 210 is configured to revolve in synchronism with the rotating drum portion 62 of the perforating drum 60 .

The perforation slider 220 has a slider body 230 (see FIG. 3) slidably attached to a pair of slide rods 210 and 210 and a pair of needle members 240 and 240 attached to the slider body 230 . The slider body 230 functions as a casing that holds the pair of needle members 240,240. The slider body 230 has a pair of rod mounting portions 231, 231 that are slidably held with respect to the pair of slide rods 210, 210, respectively, and a connecting portion 232 that connects the pair of rod mounting portions 231, 231 together. For example, each rod mounting portion 231 has a slide ball bearing or the like interposed between it and the slide rod 210 so that it can slide back and forth with respect to the slide rod 210 . In this manner, the slider body 230 of the drilling slider 220 is mounted so as to bridge between the pair of slide rods 210 and 210, and is reciprocally slidable with respect to the pair of slide rods 210 and 210. .

Further, as shown in FIG. 3, the slider body 230 has a pair of needle holders 233, 233 that hold the needle member 240. As shown in FIG. A pair of needle holding portions 233 , 233 are formed near both ends of the slider body 230 in the left-right direction. The needle member 240 includes a needle shaft portion 241 and a piercing needle portion 242 attached to the distal end side of the needle shaft portion 241 . The needle shaft portion 241 has a cylindrical shape. Although the shape of the piercing needle portion 242 is not particularly limited, the piercing needle portion 242 has a needle shape with a sharp tip so as to be suitable for piercing the heater insertion cavity portion 23 in the tobacco rod 2 . Further, as will be described later, in this embodiment, when the tobacco rod 2 is pierced with the heater insertion cavity 23, the piercing needle 242 is rotated while the tobacco rod 2 is pierced. has a conical shape on the tip side. Further, the piercing needle portion 242 and the needle shaft portion 241 of the needle member 240 are coaxially arranged. Further, as shown in FIG. 4 , the perforating needle portion 242 of the needle member 240 is arranged on the outer peripheral side of the rotating drum portion 62 of the perforating drum 60 .

In this embodiment, the needle shaft portion 241 of each needle member 240 is rotatably held with respect to each needle holding portion 233 . Here, the central axis (needle axis) CL3 of each needle member 240 (needle shaft portion 241, perforating needle portion 242) is parallel to the drum rotation axis CL2, and the holding groove of the rotating drum portion 62 in the perforating drum 60 It is coaxial with the central axis CL1 of the tobacco rod 2 in the heated tobacco 1 sucked and held by 63 .

Further, an annular roller portion 243 (contacted portion) that contacts the roller guide 170 (see FIG. 4) is provided on the base end side of the needle shaft portion 241 of each needle member 240 . In this embodiment, the roller guide 170 corresponds to a guide member. The roller portion 243 is an annular member having an outer peripheral surface with an outer diameter larger than that of the needle shaft portion 241 . As shown in FIG. 4 , the roller guide 170 is attached to the rear frame portion 92 of the frame member 90 . The roller guide 170 extends in an arc around the drum rotation axis CL2.

Here, as shown in FIG. 9, the roller guide 170 is divided into a first roller guide portion 170A to a third roller guide portion 170C. It is fixed to the part 92 . In this embodiment, the first roller guide portion 170A to the third roller guide portion 170C correspond to a plurality of divided guide portions. Further, the first roller guide portion 170A to the third roller guide portion 170C of the roller guide 170 have a guide surface 171 having an arc shape centered on the drum rotation axis CL2. When the perforation slider 220 revolves in synchronization with the rotating drum portion 62, the roller portion 243 of the needle member 240 in the perforation slider 220 is in the roller guide 170 (first roller guide portion 170A to third roller guide portion 170C). It slides on the guide surface 171 . At this time, due to the friction generated when the roller portion 243 of the needle member 240 slides on the guide surface 171 of the roller guide 170, rotational torque is generated to rotate the needle shaft portion 241 about the central axis CL3 of the needle member 240. , the needle member 240 rotates around the central axis CL3. In this way, in this embodiment, the needle member 240 can be rotated while the roller portion 243 of the needle member 240 in the perforation slider 220 is in contact with the guide surface 171 of the roller guide 170 .

Next, a configuration for sliding the perforation slider 220 along the axial direction of the slide rod 210 (that is, along the drum rotation axis CL2) in synchronization with the rotational driving of the rotating drum portion 62 will be described. As shown in FIG. 7, the lower surface of the slider body 230 is provided with a cam follower 250 that engages with a cam portion 82 formed on the outer peripheral portion of the fixed housing 80 (rotary drum base). As shown in FIG. 8, the cam follower 250 is arranged substantially in the center of the slider body 230, and as shown in FIG. is set. Although the shape of the cam follower 250 is not particularly limited, it has a substantially cylindrical shape in this embodiment.

Next, the cam portion 82 formed on the outer peripheral portion of the fixed housing 80 will be described. As shown in FIGS. 4 and 7 , a cam portion 82 that engages with a cam follower 250 provided on the drilling slider 220 is provided on the outer peripheral surface on the rear end side of the stationary housing 80 . It can also be said that the cam portion 82 forms the outer peripheral surface of the fixed housing 80 . Further, the cam portion 82 has an arc-shaped guide rail 821 formed so that a concave portion 820 capable of receiving (engaging with) the cam follower 250 extends in the circumferential direction of the fixed housing 80 . In this embodiment, the guide rails 821 are arranged in an annular shape around the drum rotation axis CL2. In other words, the guide rail 821 is provided along the entire circumference of the outer peripheral surface of the fixed housing 80 . Further, the guide rail 821 has a three-dimensional curved shape with an equal distance from the drum rotation axis CL2. The perforation slider 220 revolves around the drum rotation axis CL2 as the rotary drum section 62 rotates while the cam follower 250 is engaged with the guide rail 821 of the cam section 82 . At this time, the cam follower 250 is guided along the guide rail 821 so that the perforation slider 220 can be reciprocated along the axial direction of the slide rod 210 . The details of the slide operation of the perforation slider 220 will be described later.

As described above, the perforation slider 220 in this embodiment has two needle members 240 . Therefore, as shown in FIG. 9 , ten perforating sliders 220 , which are half the number of holding grooves 63 provided in the rotating drum portion 62 , are arranged in an annular shape on the rotating drum portion 62 . The center axis CL3 of each needle member 240 in each perforation slider 220 is coaxial with the center axis CL1 of the heated tobacco 1 (tobacco rod 2) held in the corresponding holding groove 63. In other words, the needle member 240 is arranged coaxially with respect to the heated tobacco 1 (tobacco rod 2) held in all the holding grooves 63 formed in the rotating drum portion 62, so that the tobacco rod 2 is The piercing needle portion 242 is arranged in a state of facing the distal end surface 2a. Reference numeral 190 shown in FIGS. 7 and 9 denotes an annular ring member that connects the rear ends of the slide rods 210 provided on the rotating drum portion 62 to each other.

Next, details of the sliding operation of the perforation slider 220 will be described. FIG. 10 is a diagram showing the relationship between the rotation angle of the rotating drum portion 62, the guide rail 821 in the cam portion 82, and the movement locus of the tip position (hereinafter referred to as "needle tip position") PN of the perforating needle portion 242. FIG.

As shown in FIG. 10, the guide rail 821 in the cam portion 82 has a retracted state orientation section R1, an insertion section R2, an insertion state orientation section R3, and a withdrawal section R4. "Front" shown in FIG. 10 means forward along the drum rotation axis CL2, and corresponds to "front" shown in FIG. "Rear" shown in FIG. 10 means rearward along the drum rotation axis CL2, and corresponds to "rear" shown in FIG. Also, the drum rotation angle shown in FIG. 10 corresponds to the rotation angle of the rotary drum section 62 described in FIG.

As described above, the rotating drum portion 62 of the perforating drum 60 sucked the heated tobacco 1 into the holding grooves 63 in the section corresponding to the rotation angle of 0° to 180° (hereinafter also referred to as the “conveying section”). transport in condition. Hereinafter, the position corresponding to the rotation angle of 0°, which is the starting point of the transportation section, is defined as the "transportation start position", and the position corresponding to the rotation angle of 180°, which is the end point of the transportation section, is defined as the "transportation end position". do. As shown in FIG. 10, the retracted state orientation section R1 and the inserted state orientation section R3 of the guide rail 821 correspond to the position of the cam follower 250 on the displacement axis (hereinafter referred to as the "slide axis") parallel to the drum rotation axis CL2. , a section for guiding the cam follower 250 so as not to be displaced even if the rotation angle increases. The inserted state orientation section R3 is positioned forward of the retracted state orientation section R1 by a predetermined slide displacement amount δ1. The insertion section R2 of the guide rail 821 is a section that guides the cam follower 250 so that the position of the cam follower 250 on the slide shaft is displaced forward as the rotation angle increases. The pull-out section R4 is a section that guides the cam follower 250 so that the position of the cam follower 250 on the slide shaft is displaced rearward as the rotation angle increases.

The guide rail 821 in the present embodiment has a retracted state localization section R1 corresponding to a rotation angle of 165° to 15° of the rotating drum portion 62, an insertion section R2 corresponding to a rotation angle of 15° to 65°. A section corresponding to a rotation angle of 65° to 115° is formed as an insertion state localization section R3, and a section corresponding to a rotation angle of 115° to 165° is formed as a withdrawal section R4. Therefore, from the transfer start position to the transfer end position, the cam follower 250 is in the retracted state orientation section R1 (rotation angle 0° to 15°), the insertion section R2 (rotation angle 15° to 65°), the insertion state It is sequentially guided by the orientation section R3 (rotation angle 65° to 115°), the withdrawal section R4 (rotation angle 115° to 165°), and the retracted state orientation section R1 (rotation angle 165° to 180°).

A symbol VP shown in FIG. 10 represents a virtual orthogonal plane orthogonal to the drum rotation axis CL2. FIG. 11 is a diagram for explaining the relationship between the sections R1 to R4 in the guide rail 821 provided on the cam portion 82 and the imaginary orthogonal plane VP orthogonal to the drum rotation axis CL2. As described above, the guide rail 821 has a three-dimensional curved shape with an equal distance from the drum rotation axis CL2. As shown in FIG. 11, the retracted state orientation section R1 and the inserted state orientation section R3 of the guide rail 821 are formed as a parallel guide portion 821A parallel to the virtual orthogonal plane VP. A parallel guide portion 821A in the guide rail 821 exists within a virtual plane parallel to the virtual orthogonal plane VP. More specifically, the parallel guide portion 821A (the retracted state orientation section R1 and the inserted state orientation section R3) is aligned with the first coordinate axis (in the example shown in FIG. 11, the Z axis ) as the drum rotation axis CL2, the coordinate (z coordinate) of the first coordinate axis (Z axis) is constant over the entire section of the parallel guide portion 821A. On the other hand, the insertion section R2 and the extraction section R4 in the guide rail 821 are formed as inclined guide portions 821B that are inclined (non-parallel) with respect to the virtual orthogonal plane VP. The inclined guide portion 821B (the insertion section R2 and the withdrawal section R4) is arranged along the first coordinate axis (the Z axis in FIG. 11) in the three-dimensional orthogonal coordinate system XYZ when the drum rotation axis CL2 ) is not constant (changes) along the extending direction of the inclined guide portion 821B. In the present embodiment, at least part of the guide rail 821 may be formed as the inclined guide portion 821B, and the inclined guide portion 821B forms the insertion section R2 and the withdrawal section R4.

In this embodiment, the punching slider 220 in each punching unit 200 is held by the slide rod 210 so as to be reciprocally slidable along the drum rotation axis CL2. Therefore, when the punching unit 200 (punching slider 220) rotates in synchronization with the rotation of the rotary drum section 62, if the cam follower 250 guided by the guide rail 821 is displaced along the drum rotation axis CL2 (slide axis), , the perforation slider 220 slides along the drum rotation axis CL2 (slide axis) in conjunction with the displacement of the cam follower 250 . Since the perforation slider 220 holds the needle member 240, the perforation slider 220 is slid along the drum rotation axis CL2 (slide axis), so that the needle member 240 held by the perforation slider 220 is also displaced. It is slidably displaced along the drum rotation axis CL2 (slide axis). As a result, as shown in FIG. 10, the needle tip position PN of the perforating needle portion 242 of the needle member 240 is shifted along the drum rotation axis CL2 so as to follow the displacement of the cam follower 250 along the drum rotation axis CL2 (slide axis). (slide axis).

In this embodiment, as shown in FIG. 10, the needle tip position PN of the perforating needle portion 242 is positioned rearward of the tip position of the tobacco rod 2 while the cam follower 250 is guided by the retracted state orientation section R1. maintained in a retracted position. In other words, the needle tip position PN of the perforating needle portion 242 is kept apart from the tip surface 2a of the tobacco rod 2 while the cam follower 250 is guided by the retracted state orientation section R1.

Next, when the engagement position of the cam follower 250 shifts from the retracted state orientation section R1 on the guide rail 821 to the insertion section R2, the cam follower 250 moves along the drum rotation axis CL2 (slide axis) as the rotation angle increases. to move forward. Therefore, while the cam follower 250 is guided by the insertion section R2, the needle tip position PN of the perforating needle portion 242 is forward along the drum rotation axis CL2 (slide axis), that is, the tip surface of the tobacco rod 2. It is gradually displaced in a direction approaching 2a. In the present embodiment, the slide displacement amount δ1 is adjusted so that the perforated needle portion 242 is inserted from the tip surface 2a of the tobacco filler 21 in the tobacco rod 2 while the cam follower 250 is being guided by the insertion section R2. size is set. That is, the insertion section R2 of the guide rail 821 is formed as a section that guides the cam follower 250 so that the perforating needle portion 242 is inserted into the tobacco rod 2 from the tip surface 2a. In this way, the tip surface 2a of the tobacco rod 2 (tobacco filler 21) is pierced by the piercing needle portion 242, thereby forming the heater insertion cavity 23 in the tobacco rod 2 (tobacco filler 21). can be done.

A slide stroke (hereinafter referred to as "needle slide stroke") δ3 of the needle member 240 (punching needle portion 242) is substantially equal to the slide displacement amount δ1. Therefore, by adjusting the slide displacement amount .delta.1, the heater insertion cavity 23 can be formed as a recess having a desired depth. For example, when the cam follower 250 moves through the retracted state orienting section R1, the separation dimension δ2 between the tip surface 2a of the tobacco rod 2 and the needle tip position PN (hereinafter referred to as the "initial needle separation dimension") is set to 5 mm, and the needle member 240 By setting the slide stroke (that is, the needle slide stroke) δ3 of the (piercing needle portion 242) to 25 mm, the heater insertion cavity portion 23 having a depth of 20 mm can be formed in the tobacco rod 2. However, the set values of the initial needle separation dimension δ2 and the needle slide stroke δ3 are exemplary, and can of course be changed as appropriate.

Furthermore, in the present embodiment, the cam follower 250 of the perforation slider 220 that revolves along with the rotation of the rotary drum portion 62 displaces at least a part of the insertion section R2. The needle member 240 is rotationally driven by the roller portion 243 (contacted portion) of the needle member 240 sliding along the guide surface 171 of the roller guide 170 (guide member). In the example shown in FIG. 10 , the roller portion 243 of the needle member 240 provided on the perforation slider 220 is rotated during the “first needle rotation period T1”, which is a period corresponding to the rotation angle of the rotary drum portion 62 of 25° to 65°. slides along the guide surface 171 of the first roller guide portion 170A, and the needle member 240 can be rotated by the frictional force between the roller portion 243 and the guide surface 171 during the sliding. As in the present embodiment, the perforation needle portion 242 is rotated and inserted into the distal end face 2a of the tobacco rod 2 (tobacco filler 21) to perforate the perforation needle portion 242. It is possible to reduce the insertion resistance (piercing resistance) when inserting into (tobacco filler 21). As a result, the piercing needle portion 242 can be smoothly inserted into the tobacco rod 2 (tobacco filler 21). As a result, when the heater insertion cavity 23 is pierced in the tobacco rod 2 , the posture of the heated tobacco 1 (tobacco rod 2 ) sucked and held in the holding groove 63 may be shifted, or the heated tobacco 1 may be displaced from the holding groove 63 . (Tobacco rod 2) can be prevented from coming off. In addition, when inserting the piercing needle portion 242 into the tobacco rod 2, deformation such as buckling of the tobacco rod 2 can be suppressed.

Next, when the cam follower 250 guided by the guide rail 821 shifts from the insertion section R2 to the insertion state normalization section R3, the position of the cam follower 250 on the slide shaft is maintained in the normalization, so that the slide rod 210 is moved. In contrast, the drilling slider 220 is maintained in place. As a result, while the cam follower 250 is guided by the inserted state orientation section R3, the needle tip position PN on the slide shaft is maintained in the orientation. As described above, the insertion state orientation section R3 in the guide rail 821 maintains the perforation needle portion 242 inserted into the tobacco rod 2 by maintaining the perforation slider 220 in the normal position with respect to the slide rod 210. It is formed as a section for guiding the cam follower 250 as shown in FIG. As a result, the piercing needle portion 242 can be maintained in a state of being inserted into the tobacco rod 2 in the insertion state orientation section R3.

Furthermore, in the present embodiment, the roller portion 243 ( The contact portion) slides along the guide surface 171 of the roller guide 170 (guide member), thereby rotationally driving the needle member 240 . In the example shown in FIG. 10, the roller portion 243 of the needle member 240 provided on the perforation slider 220 is rotated during the “second needle rotation period T2”, which is the period corresponding to the rotation angle of the rotary drum portion 62 of 70° to 110°. slides along the guide surface 171 of the second roller guide portion 170B, and the needle member 240 is rotated by the frictional force between the roller portion 243 and the guide surface 171 during the sliding. By rotating the perforating needle portion 242 in a state where the perforating needle portion 242 is inserted into the tobacco rod 2 in this manner, the heater inserting cavity portion 23 can be perforated in an appropriate size and shape. can. That is, while the cam follower 250 of the perforation slider 220 is positioned in the insertion state orientation section R3 of the guide rail 821, the perforation needle portion 242 is rotationally driven to match the perforation needle portion 242 inserted into the tobacco rod 2. Thus, the heater insertion cavity 23 having a square shape and size can be neatly formed, and the distortion of the heater insertion cavity 23 can be suppressed.

Next, when the cam follower 250 guided by the guide rail 821 shifts from the insertion state normalization section R3 to the withdrawal section R4, the cam follower 250 moves along the drum rotation axis CL2 (slide axis) as the rotation angle increases. Displace backward. Therefore, while the cam follower 250 is being guided by the withdrawal section R4, the needle tip position PN of the perforating needle portion 242 is rearward along the drum rotation axis CL2 (slide axis), that is, the perforating needle portion 242 is positioned toward the cigarette. It is displaced in the direction in which it is pulled out from the inside of the rod 2 . As described above, the pull-out section R4 of the guide rail 821 is formed as a section that guides the cam follower 250 so that the perforated needle portion 242 is pulled out from the tobacco rod 2 . As a result, the perforated needle portion 242 can be suitably withdrawn from the tobacco rod 2 while the cam follower 250 is guided by the withdrawal section R4.

Furthermore, in the present embodiment, the roller portion 243 (contacted roller portion 243) of the needle member 240 provided on the perforation slider 220 is maintained while the cam follower 250 of the perforation slider 220 is displaced in at least a part of the withdrawal section R4. ) slides along the guide surface 171 of the roller guide 170 (guide member), thereby rotating the needle member 240 . In the example shown in FIG. 10, the roller portion 243 of the needle member 240 provided on the perforation slider 220 is rotated during the “third needle rotation period T3”, which is the period corresponding to the rotation angle of the rotary drum portion 62 of 115° to 155°. slides along the guide surface 171 of the third roller guide portion 170C, and the needle member 240 is rotated by the frictional force between the roller portion 243 and the guide surface 171 during the sliding. By pulling out the perforating needle portion 242 from the tobacco rod 2 (tobacco filler 21) while rotating the perforating needle portion 242 in this manner, the pull-out resistance of the perforating needle portion 242 can be reduced. As a result, the piercing needle portion 242 can be smoothly pulled out from the tobacco rod 2 (tobacco filler 21). This can prevent the tobacco filler 21 from adhering to the piercing needle portion 242 when the piercing needle portion 242 is pulled out from the tobacco rod 2 . As a result, it is possible to prevent the shape of the heater insertion cavity 23 from being deformed or distorted. In addition, when the perforating needle portion 242 is pulled out from the tobacco rod 2 , it is possible to suitably prevent the heated tobacco 1 (tobacco rod 2 ) from falling out of the holding groove 63 .

After the cam follower 250 guided by the guide rail 821 shifts from the withdrawal section R4 to the retracted state orientation section R1, the needle tip position PN of the perforating needle portion 242 is separated from the tip surface 2a of the tobacco rod 2. maintained at Specifically, the needle tip position PN of the piercing needle portion 242 is maintained in a state separated from the tip end surface 2a of the tobacco rod 2 by the initial needle separation dimension δ2. Then, when the rotation angle of the rotary drum portion 62 reaches the transfer end position, the heated tobacco 1 in which the heater insertion cavity portion 23 is formed in the tobacco rod 2 is transferred from the perforated drum 60 to the subsequent drum 59. be

In the present embodiment, in the example shown in FIGS. 10 and 11, the inclined guide portion 821B (the insertion section R2 and the withdrawal section R4) of the guide rail 821 has a constant inclination angle with respect to the virtual orthogonal plane VP. formed as a region. Here, the fact that the angle of inclination with respect to the virtual orthogonal plane VP is constant means that the amount of change in the coordinate (z-coordinate) of the first coordinate axis (Z-axis) per unit rotation angle of the rotary drum section 62 is constant. do. Since the insertion section R2 in the guide rail 821 is formed as a constant-speed slide area, when the cam follower 250 is guided along the insertion section R2, the perforating needle portion 242 moves along the drum rotation axis CL2 (slide axis). to slide forward at a constant speed. As a result, the piercing needle portion 242 is inserted into the tobacco rod 2 at a constant speed. Similarly, the pull-out section R4 of the guide rail 821 is formed as a constant-speed slide area, so that when the cam follower 250 is guided along the pull-out section R4, the perforated needle portion 242 moves along the drum rotation axis CL2 (slide axis). ) at a constant speed backwards. As a result, the piercing needle portion 242 is pulled out from the tobacco rod 2 at a constant speed. Here, when the insertion section R2 and the withdrawal section R4 in the guide rail 821 are formed as constant-speed sliding regions as described above, the inclination angle of the insertion section R2 with respect to the virtual orthogonal plane VP (hereinafter referred to as the "insertion section inclination angle") , the tilt angle of the pulled-out section R4 with respect to the virtual orthogonal plane VP (hereinafter referred to as the "pull-out section tilt angle") may be the same or different. When the insertion section inclination angle and the withdrawal section inclination angle of the guide rail 821 are equal, the insertion speed when the piercing needle portion 242 is inserted into the tobacco rod 2 and the withdrawal of the piercing needle portion 242 from the tobacco rod 2 are The actual withdrawal speed becomes equal. On the other hand, when the inclination angle of the insertion section and the inclination angle of the withdrawal section of the guide rail 821 are different, the insertion speed and the withdrawal speed of the piercing needle portion 242 with respect to the tobacco rod 2 can be set to different speeds.

Furthermore, in the present embodiment, the inclined guide portion 821B (the insertion section R2 and the withdrawal section R4) of the guide rail 821 may be formed as a variable-speed slide area in which the inclination angle with respect to the virtual orthogonal plane VP is not constant (changes). . Here, the inclination angle with respect to the virtual orthogonal plane VP is not constant (changes) means that the amount of change in the coordinate (z coordinate) of the first coordinate axis (Z axis) per unit rotation angle of the rotary drum section 62 is not constant. , means to change. For example, by forming the insertion section R2 in the guide rail 821 as a variable speed slide area, when the cam follower 250 is guided along the insertion section R2, the perforated needle portion 242 is aligned with the drum rotation axis CL2 (slide shaft). It slides while changing its slide speed when sliding forward along the line. As a result, the piercing needle portion 242 is inserted into the tobacco rod 2 while changing the insertion speed. Similarly, the pull-out section R4 of the guide rail 821 is formed as a variable-speed slide area, so that when the cam follower 250 is guided along the pull-out section R4, the perforated needle portion 242 moves along the drum rotation axis CL2 (slide axis). When sliding backward along the , it slides while changing the slide speed. As a result, the piercing needle portion 242 is withdrawn from the tobacco rod 2 while changing the withdrawal speed. In this embodiment, the inclined guide portion 821B of the guide rail 821 may include at least one of the above-described "constant speed slide area" and "variable speed slide area". That is, all of the inclined guide portions 821B in the guide rail 821 may be either the "constant speed slide area" or the "variable speed slide area". Also, the inclined guide portion 821B of the guide rail 821 may include both the "constant speed slide area" and the "variable speed slide area". In that case, the ratio between the "constant speed slide area" and the "variable speed slide area" can be set freely.

Here, the pull-out section tilt angle (the tilt angle of the pull-out section with respect to the virtual orthogonal plane VP) in the guide rail 821 is preferably smaller than the insertion section tilt angle (the tilt angle of the insertion section with respect to the virtual orthogonal plane VP). By doing so, the withdrawal speed of the piercing needle portion 242 with respect to the tobacco rod 2 can be made smaller than the insertion speed. Here, as compared with the insertion resistance when inserting the piercing needle portion 242 into the tobacco rod 2, the withdrawal resistance when withdrawing the piercing needle portion 242 from the tobacco rod 2 tends to be relatively large. Therefore, by making the withdrawal speed of the piercing needle portion 242 with respect to the tobacco rod 2 relatively smaller than the insertion speed, the piercing needle portion 242 can be slowly withdrawn from the tobacco rod 2 . This can prevent the heated tobacco 1 (tobacco rod 2) from falling out of the holding groove 63 when the piercing needle portion 242 is pulled out from the tobacco rod 2, and the tobacco filler 21 adheres to the piercing needle portion 242. It is also possible to suppress distortion of the shape of the heater insertion cavity 23 .

Further, it is preferable that the cam portion 82 (guide rail 821) in the present embodiment is longer in the withdrawal section R4 than in the insertion section R2. By doing so, the time required to pull out the perforating needle portion 242 from the tobacco rod 2 can be made longer than the time required to insert the perforating needle portion 242 into the tobacco rod 2 . By doing so, the piercing needle portion 242 can be slowly pulled out from the tobacco rod 2 . As a result, when the perforated needle portion 242 is pulled out from the tobacco rod 2, the heated tobacco 1 (tobacco rod 2) may fall out of the holding groove 63, the tobacco filler 21 may adhere to the perforated needle portion 242, or , distortion of the shape of the heater insertion cavity portion 23 can be suitably suppressed.

Here, FIG. 12 shows the first direction vector V1 of the first imaginary vertical line VL1 extending from the start position (hereinafter referred to as "insertion section start end") P1 of the insertion section R2 on the guide rail 821 toward the drum rotation axis CL2, A first central angle (hereinafter referred to as an "insertion section a third direction vector V3 of a third imaginary vertical line VL3 extending from the starting position P3 of the withdrawal section R4 (hereinafter referred to as the "starting end of the withdrawal section") toward the drum rotation axis CL2; and the withdrawal section R4. A second center angle (hereinafter referred to as a "withdrawal section center angle") formed by a fourth directional vector V4 of a fourth imaginary vertical line VL4 extending from the end position (hereinafter referred to as a "withdrawal section end") P4 toward the drum rotation axis CL2. ) is a diagram for explaining φ2. The insertion section start point P1, the insertion section end point P2, the pull-out section start point P3, and the pull-out section end point P4 are also illustrated in FIG. Here, as in the example described with reference to FIG. When the section corresponding to ° is set as the extraction section R4, both the insertion section central angle φ1 and the extraction section central angle φ2 are set to 50°. Further, in the present embodiment, the central angle φ1 of the insertion section and the central angle φ2 of the withdrawal section may be set to different sizes. At that time, it is preferable to set the central angle φ2 of the extraction section to be relatively larger than the central angle φ1 of the insertion section. As a result, the piercing needle portion 242 can be slowly pulled out from the tobacco rod 2 . As a result, when the perforated needle portion 242 is pulled out from the tobacco rod 2, the heated tobacco 1 (tobacco rod 2) can be prevented from falling out of the holding groove 63, and the tobacco filler 21 adheres to the perforated needle portion 242. Also, it is possible to suppress distortion of the shape of the heater insertion cavity 23 . In addition, in the present embodiment, a mode in which the center angle of the insertion section (first center angle) φ1 is set to 10° or more and 120° or less can be exemplified. Further, a mode in which the center angle (second center angle) φ2 of the drawing section is set to 10° or more and 180° or less can be exemplified.

As described above, according to the present embodiment, it is possible to provide the perforating drum device 70 suitable for perforating the heater insertion cavity 23 opening at the distal end surface 2 a of the tobacco rod 2 .

Further, in the roller guide 170 of the perforating drum device 70 in this embodiment, the roller guide 170 is divided into a plurality of first roller guide portions 170A to third roller guide portions 170C (a plurality of divided guide portions). It is divided so that the roller guide portions 170A to 170C are spaced apart from each other. According to this, when the roller portion 243 of the needle member 240 wears due to friction with the guide surface 171 and the frictional force fluctuates, the position of the guide surface 171 can be easily finely adjusted. Further, the rotational torque of the needle member 240 can be easily finely adjusted in accordance with the filling amount of the tobacco filler 21 in the tobacco rod 2 .

Further, various modifications can be adopted for the perforating drum device 70 in this embodiment. For example, various modifications can be adopted for the stroke operation of the needle member 240 in the process of conveying the heated tobacco 1 by the perforated drum 60 . For example, the stroke operation of the needle member 240 can be changed by changing the length and ratio of each section of the retracted state orientation section R1, the insertion section R2, the insertion state orientation section R3, and the withdrawal section R4 in the guide rail 821. good. For example, the guide rail 821 does not have to form the inserted state orientation section R3 between the insertion section R2 and the withdrawal section R4. By forming the guide rail 821 in this way, the piercing needle portion 242 of the needle member 240 is inserted into the tobacco rod 2 to pierce the heater insertion cavity portion 23, and then the piercing needle portion is immediately removed from the tobacco rod 2. 242 may pull out.

Further, as an example, the tobacco rod 2 may have a diameter of about 7 mm to 8 mm. Therefore, in the perforating drum device 70, the diameter of the perforating needle portion 242 of the needle member 240 is preferably 3.5 mm or less. By doing so, the heater insertion cavity 23 having an appropriate diameter can be formed for the tobacco rod 2 .

Further, in the heated cigarette 1 shown in FIG. may be formed as a through hole penetrating in the axial direction.

Here, FIG. 13 is a diagram for explaining the relationship between the needle shaft AN of the punching needle portion 242 and the holding groove 63 (holding portion) in the punching drum device 70. As shown in FIG. Reference character Pcb in FIG. 13 indicates the center of the groove bottom (hereinafter referred to as “groove bottom center”) in the holding groove 63 (holding portion). In FIG. 13, the groove bottom center Pcb is located at the deepest part of the holding groove 63 having a semicircular cross-sectional shape. A symbol VL5 is an imaginary vertical line extending from the groove bottom center Pcb of the holding groove 63 (holding portion) toward the drum rotation axis CL2. Reference Pcc is the intersection of the imaginary vertical line VL5 and the drum rotation axis CL2. That is, the intersection point Pcc is located on the drum rotation axis CL2. Reference VL6 is a straight line passing through the intersection point Pcc and the groove bottom center Pcb. In this embodiment, the needle axis AN of the perforating needle portion 242 is on the straight line VL6, passes through a point located outside the groove bottom center Pcb, and extends parallel to the drum rotation axis CL2. is preferably set to At this time, it is more preferable to set the distance between the groove bottom center Pcb in the holding groove 63 and the needle axis AN of the piercing needle portion 242 to be equal to or less than the diameter of the tobacco rod 2 held in the holding groove 63 . In this embodiment, the distance between the center Pcb of the groove bottom in the holding groove 63 and the needle axis AN of the piercing needle portion 242 is set equal to the radius of the tobacco rod 2 held in the holding groove 63, for example. As a result, the needle axis AN of the piercing needle portion 242 is set to be coaxial with the central axis CL1 of the tobacco rod 2 held in the holding groove 63 . By setting the position of the needle axis AN in this way, the heater insertion cavity 23 of the tobacco rod 2 can be formed coaxially with the central axis CL1 of the tobacco rod 2 .

Here, FIG. 14 is a diagram for explaining a modification of the first embodiment. FIG. 14 is a diagram corresponding to FIG. 7 and shows the detailed configuration of the punching unit 200. As shown in FIG. The rotating drum portion 62 in this modified example has a second stop ring 187 . The second stop ring 187 is an annular ring member attached to the outer peripheral surface 62A of the rotary drum portion 62 and arranged to face the stop ring 186 . The second stop ring 187 is attached behind the holding groove 63 . The second stop ring 187 abuts against the distal end face 2 a of the tobacco rod 2 when the perforated needle portion 242 is pulled out from the tobacco rod 2 , thereby suppressing the falling off of the heated tobacco 1 from the holding groove 63 . It is a stopper member.

FIG. 15 is a partially enlarged view of the second stop ring 187 in the modified example of the first embodiment. FIG. 15 shows the second stop ring 187 viewed parallel to the drum rotation axis CL2. As shown in FIG. 15, the second stop ring 187 has notches 187A formed at positions corresponding to the respective holding grooves 63. As shown in FIG. Each notch 187A in the second stop ring 187 overlaps the perforation needle portion 242 in the direction of the arrow of the drum rotation axis CL2, and when the perforation needle portion 242 slides along the needle axis AN, the perforation The needle portion 242 is designed not to interfere (collide) with the second stop ring 187 . In FIG. 15, the contour of the tobacco rod 2 is indicated by broken lines, and the contour of the piercing needle portion 242 is indicated by dashed lines. As shown in FIG. 15, the notch 187A of the second stop ring 187 is smaller than the contour of the tobacco rod 2. As shown in FIG. As a result, when the piercing needle portion 242 is pulled out from the tobacco rod 2, even if the tobacco rod 2 is displaced rearward due to the pull-out resistance, the second stop ring 187 (more specifically, the edge of the notch 187A) etc.), the tobacco rod 2 can be prevented from falling out of the holding groove 63 . In the example shown in FIG. 14, while the tobacco rod 2 is held in the holding groove 63, the distal end surface 2a of the tobacco rod 2 and the second stop ring 187 are spaced apart in the direction of the drum rotation axis CL2. The second stop ring 187 may be arranged at a position where the tip end surface 2 a contacts the second stop ring 187 when the tobacco rod 2 is held in the holding groove 63 .

The present invention may be provided as a punching device including a plurality of punching drum devices 70 according to the above-described embodiments. In such a perforating device, each perforating drum device 70 may be incorporated into a filter tip attachment device 50. FIG. FIG. 16 illustrates a perforating device including a plurality of perforating drum devices 70 incorporated in a filter tip attachment device 50. FIG. In the example shown in FIG. 16 , the perforating device includes two perforating drum devices 70 . Individual perforation drum devices 70 are as described in the above embodiment. Reference numeral 70A denotes a perforating drum device positioned relatively upstream in the filter chip attachment device 50, and is hereinafter referred to as a "previous perforating drum device". Reference numeral 70B denotes a perforating drum device positioned after the preceding perforating drum device 70A, and is hereinafter referred to as a "posterior perforating drum device". Here, among the plurality of perforating drum devices 70, the needle diameter of the perforating needle portion 242 provided in the rear perforating drum device 70B positioned relatively in the rear stage is the same as that of the front perforating drum device 70A positioned relatively in the front stage. It may have dimensions larger than the needle diameter of the provided piercing needle portion 242 . In this way, a plurality of perforated drum devices 70 are arranged, and the perforated needle portions 242 having diameters that are gradually increased with respect to the tobacco rod 2 of the heated tobacco 1 that are sequentially conveyed through the drum row are used to create a heater insertion cavity. By perforating the portion 23, the diameter of the heater insertion cavity portion 23 can be expanded step by step. That is, by using the heater insertion cavity 23 formed in the tobacco rod 2 by the front perforation drum device 70A as a pilot hole, further perforation is performed by the perforation needle portion 242 of the rear perforation drum device 70B to obtain a desired diameter and shape. It is possible to form the heater insertion cavity 23 with a well-aligned shape with much higher accuracy.

Furthermore, among the plurality of perforating drum devices 70, the needle insertion depth dimension of the perforating needle part 242 provided in the rear perforating drum device 70B positioned relatively in the rear stage is relatively lower than that of the front perforating drum device 70 positioned in the front stage. It may be set to a dimension larger than the needle insertion depth dimension of the perforation needle portion 242 provided in the device 70A. In this case, the heater insertion cavity 23 formed in the tobacco rod 2 by the front perforating drum device 70A can be used as a pilot hole, and the perforation needle portion 242 of the rear perforating drum device 70B can perforate deeper. In the example shown in FIG. 16, an example in which two perforating drum devices 70 are arranged in series has been described, but the perforating device may have three or more perforating drum devices 70 . Then, from the perforating drum device 70 positioned most upstream to the perforating drum device 70 positioned most downstream, the needle diameter of the perforating needle portion 242 is increased stepwise, and the needle insertion depth dimension is increased stepwise. By increasing the depth, the diameter of the heater insertion cavity 23 in the tobacco rod 2 may be increased stepwise, or the depth may be increased stepwise.

In the example shown in FIG. 16, the drum 59 is interposed between the perforating drums 60 of each perforating drum device 70, but the perforating drums 60 of each perforating drum device 70 may be arranged continuously. Also, a plurality of drums 59 may be interposed between the perforating drums 60 in each perforating drum device 70 .

Although the embodiments and modifications according to the present invention have been described above, the perforating drum device and the perforating device according to the present invention are not limited to these, and they can be combined as much as possible.

Reference Signs List 1 Heated tobacco 2 Tobacco rod 3 Filter 21 Tobacco filler 23 Heater insertion cavity 50 Filter chip attachment 60 Perforated drum 62 Rotary drum portion 63 Holding groove 70 Punching drum device 80 Fixed housing 82 Cam portion 200 Punching unit 210 Slide rod 220 Punching slider 230・Slider main body 240 Needle member 242 Perforating needle part

Claims (21)

A perforating drum device for perforating cavities in a tobacco rod of a heated tobacco, comprising:
a rotating drum portion having, on its outer peripheral surface, a holding portion for holding heated tobacco so that the axial direction of the tobacco rod is aligned with the rotation axis of the drum;
a piercing unit provided on the rotating drum portion for piercing the tip end of the tobacco rod of the heated tobacco held by the holding portion in the process of conveying the heated tobacco;
a cam portion provided at a rotating drum base portion, which is an immovable fixed member provided side by side with the rotating drum portion;
with
The punching unit
a slide rod rotating in synchronism with the rotating drum portion and extending in parallel with the rotating shaft of the drum;
a perforation slider having a perforation needle portion disposed on the outer peripheral side of the rotating drum portion and held by the slide rod so as to be reciprocally slidable along the axial direction of the slide rod;
It is provided on the perforation slider, engages with the cam portion, and is guided by the cam portion when it rotates with the rotation of the rotating drum portion, thereby moving the perforation slider in the axial direction of the slide rod. a cam follower that slides back and forth along the
has
The cam portion has at least an insertion section that guides the cam follower so that the perforating needle portion is inserted into the tobacco rod from the distal end, and a section that guides the cam follower so that the perforating needle portion is pulled out from the tobacco rod. a withdrawal zone, and
The perforation slider has a slider body slidably mounted on the slide rod, and a needle shaft part rotatably held by the slider body and having the perforation needle part attached to the tip side thereof,
The needle shaft portion and the perforating needle portion are arranged coaxially and are rotatable about a rotation axis parallel to the drum rotation axis,
The rotating drum base portion is formed on the needle shaft portion while the cam follower of the perforation slider that revolves along with the rotation of the rotating drum portion displaces at least a part of the insertion section. a guide member having an arc-shaped guide surface centered on the drum rotation axis for rotating the needle shaft by sliding a predetermined contacted portion;
The contacted portion is an annular roller portion provided coaxially and integrally with the needle shaft portion, and the roller portion of the needle shaft portion of the perforation slider that rotates slides along the guide surface. The needle shaft rotates due to friction when
Perforated drum device. The cam portion has a guide rail extending in an arc around the drum rotation axis and capable of receiving the cam follower.
A perforated drum apparatus according to claim 1. 3. The perforating drum device according to claim 2, wherein said guide rails are arranged in a ring around said drum rotation axis. The guide rail has a three-dimensional curved shape with an equidistant distance from the drum rotation axis, and has an inclined guide part at least a part of which is inclined with respect to a virtual orthogonal plane perpendicular to the drum rotation axis. and the slant guide portion forms the insertion section and the withdrawal section,
A perforated drum device according to claim 2 or 3. The inclined guide portion includes at least one of a constant-speed slide area with a constant inclination angle with respect to the virtual orthogonal plane and a variable-speed slide area with an uneven inclination angle with respect to the virtual orthogonal plane,
A perforated drum apparatus according to claim 4. an inclination angle of the withdrawal section with respect to the virtual orthogonal plane is smaller than an inclination angle of the insertion section with respect to the virtual orthogonal plane;
A perforated drum device according to claim 4 or 5. The rotating drum base has a cylindrical housing coaxial with the drum rotating shaft, and the guide rail is provided along the outer peripheral surface of the cylindrical housing.
Perforated drum device according to any one of claims 2 to 6. The cam portion is longer in the withdrawal section than in the insertion section,
Perforated drum device according to any one of claims 1 to 7. The cam portion is arranged in an annular shape around the drum rotation axis, and has a direction vector of a first imaginary vertical line extending from the start position of the insertion section toward the drum rotation axis and A directional vector of a third imaginary perpendicular line extending from the starting position of the withdrawal section toward the drum rotational axis is larger than a first central angle φ1 formed by a directional vector of a second imaginary perpendicular line extending toward the drum rotational axis. , a second central angle φ2 formed by a direction vector of a fourth imaginary perpendicular line extending from the end position of the withdrawal section toward the drum rotation axis is large;
Perforated drum device according to any one of claims 1 to 8. The cam portion is arranged in an annular shape around the drum rotation axis, and has a direction vector of a first imaginary vertical line extending from the start position of the insertion section toward the drum rotation axis and A first central angle φ1 formed by a directional vector of a second imaginary perpendicular extending toward the drum rotation axis is 10° or more and 120° or less.
Perforated drum machine according to any one of the preceding claims. The cam portion is arranged in an annular shape centering on the drum rotation axis, and has a directional vector of a third imaginary perpendicular line extending from the start position of the withdrawal section toward the drum rotation axis and from the end position of the withdrawal section. A second central angle φ2 formed by a direction vector of a fourth imaginary perpendicular extending toward the drum rotation axis is 10° or more and 180° or less.
Perforated drum device according to any one of the preceding claims. The cam portion maintains the piercing needle portion inserted into the tobacco rod by maintaining the piercing slider in a normal position with respect to the slide rod between the insertion section and the withdrawal section. including an inserted state orientation section that guides the cam follower so as to
Perforated drum machine according to any one of the preceding claims. The diameter of the piercing needle portion is 3.5 mm or less,
Perforated drum machine according to any one of the preceding claims. The guide member is arranged so that the cam follower of the perforation slider that revolves along with the rotation of the rotary drum portion is in contact with the contacted portion while the cam follower is displaced in at least a part of the pull-out section. formed,
Perforated drum machine according to any one of the preceding claims. The guide member has a plurality of divided guide portions obtained by dividing the guide member into a plurality of divided guide portions, and the plurality of divided guide portions are separated from each other.
Perforated drum apparatus according to any one of claims 1 to 14 . The holding part is a holding groove having a concave shape capable of holding a heated cigarette,
The needle axis of the perforating needle portion is on a straight line passing through the center of the groove bottom and the intersection of an imaginary vertical line extending from the center of the groove bottom in the holding groove toward the drum rotation axis and the drum rotation axis. passing through a point located outside the center of the groove bottom and extending parallel to the drum rotation axis;
Perforated drum apparatus according to any one of claims 1 to 15 . The distance between the center of the groove bottom in the holding groove and the needle shaft in the perforated needle portion is set to be equal to or smaller than the diameter of the tobacco rod in the heated tobacco held in the holding groove.
17. Perforated drum apparatus according to claim 16 . The rotary drum portion contacts the mouthpiece end of the heated tobacco when the perforated needle portion is inserted into the tip of the tobacco rod, thereby suppressing the heated tobacco from falling off from the holding portion. having a stopper member,
Perforated drum machine according to any one of the preceding claims. The rotating drum portion has a second stopper member that prevents the heated tobacco from falling off from the holding portion by abutting against the tip of the tobacco rod when the perforated needle portion is pulled out from the tobacco rod.
Perforated drum machine according to any one of the preceding claims. A perforating device comprising a plurality of perforating drum devices,
The perforated drum device comprises:
A perforating drum device for perforating cavities in a tobacco rod of a heated tobacco, comprising:
a rotating drum portion having, on its outer peripheral surface, a holding portion for holding heated tobacco so that the axial direction of the tobacco rod is aligned with the rotation axis of the drum;
a piercing unit provided on the rotating drum portion for piercing the tip end of the tobacco rod of the heated tobacco held by the holding portion in the process of conveying the heated tobacco;
a cam portion provided on a rotating drum base portion provided side by side with the rotating drum portion;
with
The punching unit
a slide rod rotating in synchronism with the rotating drum portion and extending in parallel with the rotating shaft of the drum;
a perforation slider having a perforation needle portion disposed on the outer peripheral side of the rotating drum portion and held by the slide rod so as to be reciprocally slidable along the axial direction of the slide rod;
It is provided on the perforation slider, engages with the cam portion, and is guided by the cam portion when it rotates with the rotation of the rotating drum portion, thereby moving the perforation slider in the axial direction of the slide rod. a cam follower that slides back and forth along the
has
The cam portion has at least an insertion section that guides the cam follower so that the perforating needle portion is inserted into the tobacco rod from the distal end, and a section that guides the cam follower so that the perforating needle portion is pulled out from the tobacco rod. a withdrawal zone, and
Among the plurality of perforating drum devices, the needle diameter of the perforating needle portion provided in the perforating drum device positioned relatively in the rear stage is equal to the needle diameter of the perforating needle portion provided in the perforating drum device positioned relatively in the front stage. larger than the needle diameter of
perforator. A perforating device comprising a plurality of perforating drum devices,
The perforated drum device comprises:
A perforating drum device for perforating cavities in a tobacco rod of a heated tobacco, comprising:
a rotating drum portion having, on its outer peripheral surface, a holding portion for holding heated tobacco so that the axial direction of the tobacco rod is aligned with the rotation axis of the drum;
a piercing unit provided on the rotating drum portion for piercing the tip end of the tobacco rod of the heated tobacco held by the holding portion in the process of conveying the heated tobacco;
a cam portion provided on a rotating drum base portion provided side by side with the rotating drum portion;
with
The punching unit
a slide rod rotating in synchronism with the rotating drum portion and extending in parallel with the rotating shaft of the drum;
a perforation slider having a perforation needle portion disposed on the outer peripheral side of the rotating drum portion and held by the slide rod so as to be reciprocally slidable along the axial direction of the slide rod;
It is provided on the perforation slider, engages with the cam portion, and is guided by the cam portion when it rotates with the rotation of the rotating drum portion, thereby moving the perforation slider in the axial direction of the slide rod. a cam follower that slides back and forth along the
has
The cam portion has at least an insertion section that guides the cam follower so that the perforating needle portion is inserted into the tobacco rod from the distal end, and a section that guides the cam follower so that the perforating needle portion is pulled out from the tobacco rod. a withdrawal zone, and
Among the plurality of perforating drum devices, the needle insertion depth dimension of the perforating needle portion provided in the perforating drum device positioned relatively in the rear stage is the same as the needle insertion depth dimension provided in the perforating drum device positioned relatively in the front stage. larger than the needle insertion depth of the perforation needle,
perforator.

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